JPH0340665B2 - - Google Patents
Info
- Publication number
- JPH0340665B2 JPH0340665B2 JP61021533A JP2153386A JPH0340665B2 JP H0340665 B2 JPH0340665 B2 JP H0340665B2 JP 61021533 A JP61021533 A JP 61021533A JP 2153386 A JP2153386 A JP 2153386A JP H0340665 B2 JPH0340665 B2 JP H0340665B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- electrode
- jig
- vehicle body
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003466 welding Methods 0.000 claims description 85
- 238000000034 method Methods 0.000 description 16
- 238000013459 approach Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
- B23K11/312—Electrode holders and actuating devices therefor for several electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Resistance Welding (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は自動車等の車体に溶接を施すために使
用する車体の溶接装置であつて、特に、車体等の
窪んだトンネル状の箇所を溶接するために使用す
る車体の溶接装置に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention is a vehicle body welding device used for welding the bodies of automobiles, etc., and is particularly applicable to welding hollow tunnel-like parts of vehicle bodies, etc. This article relates to a vehicle body welding device used for welding.
（従来の技術）
一般に、板材からなる自動車等の車体は、作業
能率の向上のために数十点におよぶ点を同時に溶
接できるように溶接治具を使用してロボツト機構
と共にマルチスポツト溶接によつて行なつてい
る。この種の溶接装置としては、第８図にその概
略を示すように車体２が図示省略されている搬送
手段によつて溶接場所へ搬入されると、下方から
受け駒８とバツク電極４２とが取付台４６に形成
された溶接治具４７が溶接箇所１０に接近して、
バツク電極４２に形成された電極チツプ２７が車
体２７に当接する。一方、他の上部電極４３が下
降して、その電極チツプ２８が溶接箇所１０を介
して、上記バツク電極４２の電極チツプ２７に対
して加圧し、通電することによつて溶接加工され
る。(Prior art) In general, vehicle bodies such as automobiles made of plate materials are welded by multi-spot welding together with a robot mechanism using a welding jig so that tens of points can be simultaneously welded to improve work efficiency. It's going on. As shown schematically in FIG. 8, this type of welding device is constructed such that when the vehicle body 2 is transported to a welding location by a transport means (not shown), a receiving piece 8 and a back electrode 42 are connected to each other from below. The welding jig 47 formed on the mounting base 46 approaches the welding location 10,
An electrode chip 27 formed on the back electrode 42 comes into contact with the vehicle body 27. Meanwhile, the other upper electrode 43 is lowered, and its electrode tip 28 is welded by applying pressure to the electrode tip 27 of the back electrode 42 via the welding point 10 and applying current.
次に、第８図に示すように別な車種で、しかも
上記のものよりも大きいトンネル状の溶接箇所４
４の場合、搬送手段によつて、車体２の溶接箇所
４４に対応するバツク電極が備えられた溶接場所
に移動して、上記した工程とは別の工程として溶
接加工が行われている。したがつて車体２を移動
させるような工程が割込むことになる。 Next, as shown in Fig. 8, a tunnel-shaped welding point 4 of a different car model and larger than the above one is shown.
In case No. 4, the vehicle body 2 is moved to a welding location equipped with a back electrode corresponding to the welding location 44 of the vehicle body 2 by means of a conveyance means, and welding is performed as a process different from the above-described process. Therefore, a step such as moving the vehicle body 2 will be involved.
（発明が解決しようとする問題点）
上記のような従来の溶接装置では、溶接箇所が
共通形状でありながら大きさが異なるために同一
工程内での溶接加工ができないので、車体を移動
させるような別工程が割込むことになり、作業工
数が多くなつている。このことに加えて、共通形
状を有する溶接箇所の溶接加工は、その大きさの
異なつた、例えば、車種の数の分だけ車体を移動
することになる。すなわち車種の数、または、異
なつた形状の溶接箇所の数だけの工程を要するこ
とになる。(Problems to be Solved by the Invention) With the conventional welding equipment as described above, the welding parts have a common shape but different sizes, so welding cannot be performed in the same process. The number of man-hours required is increasing due to the interruption of another process. In addition to this, welding of welding points having a common shape requires moving the vehicle body by the number of different vehicle sizes, for example, the number of vehicle types. In other words, the number of processes required is equal to the number of vehicle types or the number of welding locations of different shapes.
そこで、本発明は上記問題点を解決するために
なされたものであつて、上電極に対するアース電
極となる下電極を異なつた大きさの溶接箇所用の
下電極に切替可能に、かつ位置選択可能にしたこ
とによつて、共通形状で大きさの異なつた溶接箇
所に対して無駄な割込工程を不要とし、同一工程
内で溶接ができる汎用性に富んだ車体の溶接装置
を提供することである。 Therefore, the present invention has been made to solve the above problems, and it is possible to switch the lower electrode, which serves as a ground electrode for the upper electrode, to a lower electrode for a welding location of a different size, and to select the position. This eliminates the need for unnecessary interruption processes for welding points that have a common shape but differ in size, and provides a highly versatile vehicle body welding device that can perform welding in the same process. be.
（問題点を解決するための手段）
上記目的を達成するために本発明の特徴は、ス
ポツト溶接用の上・下電極を備え、該上・下電極
によりフレーム構造の台車上の車体に対して溶接
を行なう溶接装置において、前記下電極を複数の
車体に対応する複数の電極から形成し、これら複
数の電極を回転治具の座面に放射状に取り付け、
前記回転治具を上下動可能な治具本体で支持し、
該治具本体に前記回転治具を回転位置決めする切
替機構を持たせ、さらに前記台車に前記回転治具
の貫通を許容する開口部を設けたことである。(Means for Solving the Problems) In order to achieve the above object, the present invention is characterized by comprising upper and lower electrodes for spot welding, and by means of the upper and lower electrodes, the vehicle body on the frame structure truck is In a welding device that performs welding, the lower electrode is formed from a plurality of electrodes corresponding to a plurality of vehicle bodies, and the plurality of electrodes are radially attached to a seat surface of a rotating jig,
The rotating jig is supported by a jig main body that is movable up and down,
The jig main body is provided with a switching mechanism for rotationally positioning the rotary jig, and the cart is further provided with an opening that allows the rotary jig to pass through.
（作用）
上記構成によつて、溶接加工される車体が台車
によつて溶接作業場所に搬入されると、その溶接
箇所に対応する下電極が切替機構によつて選択さ
れると共に位置選択される。その後、下電極が溶
接箇所に接近し、当接する。そして、下電極に対
して、溶接箇所を介し、上電極が押圧し、通電す
ることによつて溶接される。次に溶接箇所が共通
形状の別な車体が台車によつて搬入されると、切
替機構がそれに対応する別な下電極を選択し、か
つ、位置選択することによつて、同一工程内にお
いて、共通形状で異なつた大きさの溶接箇所が溶
接加工される。(Function) With the above configuration, when the car body to be welded is carried to the welding work place by the trolley, the lower electrode corresponding to the welding location is selected and the position is selected by the switching mechanism. . Thereafter, the lower electrode approaches and comes into contact with the welding location. Then, the upper electrode is pressed against the lower electrode through the welding location and welded by applying current. Next, when another car body with the same shape of welding point is brought in by truck, the switching mechanism selects a different lower electrode corresponding to it and selects the position, so that in the same process, Welding parts of different sizes with a common shape are welded.
（実施例）
以下、本発明の実施例を図面に基づいて説す
る。まず、第１図は本発明の車体の溶接装置（以
下、単に溶接装置という）１を示す一実施例であ
つて、車体２の搬送方向と直交する正面図であ
る。第１図では電源側に接続されている上電極は
省略されており、本発明の主要な構成であるアー
ス電極となる下電極（以下、電極部という）につ
いて述べる。この溶接装置１は自動車の車体を組
み立てるための溶接ラインに位置しているもの
で、溶接ラインには、全体に渡りパレツトレール
４が床面５よりも高く敷設され、そのパレツトレ
ール４上を車体２を載置する台車としてのパレツ
ト６が、それに取り付けられた車輪７によつて走
行可能になつている。パレツト６はフレーム構造
であつて、第２図にも示すように車体２を支持す
るための受け駒８が所定位置に配設されている。
このパレツト６の平面箇所には、治具本体３が車
体２の溶接箇所へ接近できるように開口部９が形
成されている。第１図は、この開口部９から治具
本体３が突き出て、車体２の溶接箇所１０に当接
した状態を示している。したがつて、溶接装置１
は、通常パレツト６よりも下方に位置しているこ
とになる。溶接装置１は床面５に位置している機
台１１がもとになつており、この機台１１は、ほ
ぼ上半部１２と下半部１３とに分られている。機
台１１の両側には昇降ガイド１４が垂直に設けら
れ、床面５から上方に、また下方に延びている。
この昇降ガイド１４には機台１１の上半部１２の
案内部１５が嵌まり込んで、そして、昇降ガイド
１４に挾まれた機台１１の下半部１３の中心に昇
降シリンダ１６が位置し、床面５から下方に延び
ている。昇降シリンダ１６のピストン１７の先端
は下半部１３を通り抜けて上半部１２に取り付け
られていることによつて機台１１の上半部１２を
上下動可能としている。機台１１の上半部１２は
治具本体３と一体になつており、さらに上方へ延
びる治具本体３には、後述する複数の電極部１８
を備え、切替機構１９によつて切替可能となつて
いる。この切替機構１９は、略正三角形状に鉄材
によつて組み付けられた回転治具２０が軸２１に
よつて外枠２２に軸支され回転可能となつてい
る。回転治具２０の軸２１は第３図に示すよう
に、電動モータ２３、チエーン２４、歯車２５の
組み合わせ等からなる駆動部２６によつて回転す
る。回転治具２０の略正三角形状の各辺の座面２
０ａには電気的に導通状態にある電極部１８が固
着され、さらにその外側には第４図および第５図
に詳細を示すように電極チツプ２７が固着されて
いる。なお、この電極チツプ２７に対して車体２
を介し接しているのは、電源側の電極チツプ２８
である。回転治具２０の各三辺に取り付けられて
いる電極部１８は、異なつた車種が有する共通形
状の溶接箇所、特に、第１図に示すように窪んだ
トンネル状の溶接箇所１０に対して、少なくと
も、三種類の電極部１８を取り付けることができ
るものである。この異なつた三種類の電極部１８
を上記した駆動部２６によつて回転させ、そして
位置決めするために、第３図に示すようにロツク
部２９を設けている。このロツク部２９は、ロツ
クシリンダ３０とそのピストン３１の先端に取り
付けられたロツクブロツク３２からなるものであ
つて、ロツクシリンダ３０の上下動によつて、ロ
ツクブロツク３２がガイドブロツク３３に案内さ
れ摺動可能となつている。ロツクブロツク３２
は、第６図に示すように、回転治具２０の略正三
角形の頂部に対してそのＶ溝３４が嵌まり込むよ
うになつている。さらに第２図に略して示してい
るが、車体２の搬送方向で、かつパレツトレール
４と床面５との間の機台１１には、上記した電極
部１８を異なつた二段の高さに位置決めできる位
置決め部３５が取り付けられている。この位置決
め部３５は第７図に詳しく示すように、上記した
治具本体３の側面に沿つて設けられているもので
あつて、治具本体３の側面には、治具本体３を上
段と下段に位置させるために当接体３６が突設さ
れ、この当接体３６を有する治具本体３と平行に
略Ｌ字形状の停止枠３７が床面５から上方に、か
つ床面５に沿つて形成されている。停止枠３７の
治具本体３に面する側面の上部には停止体３８が
突設し、上記した上段と下段の当接体３６のいず
れかに当接できるようになつている。停止体３８
の下部には略Ｌ字形状の停止体３９が軸支される
と共に、その中間位置にリンク機構の一端が軸支
され、その他端がシリンダ４０のピストン４１に
軸支されることによつて、実線で示すように停止
体３９の先端が上記の上段と下段の当接体３６の
いずれかに当接できるようになつている。二点鎖
線によつて示す位置は、当接体３６に停止体３９
を当接させない状態を示している。以上述べた回
転治具２０の三種類の電極部１８と、上下、二段
のいずれかに選択できる位置決め部３５とから、
一台の溶接装置１で合計六種類の異なつた共通箇
所の溶接が可能となる。また第２図に示すように
異なつた電極部１８を備えたものを隣接して並べ
ると、さらにその種類は増すことになる。(Example) Hereinafter, an example of the present invention will be described based on the drawings. First, FIG. 1 shows one embodiment of a vehicle body welding device (hereinafter simply referred to as a welding device) 1 of the present invention, and is a front view orthogonal to the transport direction of a vehicle body 2. As shown in FIG. In FIG. 1, the upper electrode connected to the power supply side is omitted, and the lower electrode (hereinafter referred to as the electrode section) which serves as the ground electrode, which is the main component of the present invention, will be described. This welding device 1 is located on a welding line for assembling automobile bodies. A pallet rail 4 is laid higher than the floor 5 over the entire welding line, and the car body 2 is mounted on the pallet rail 4. A pallet 6 serving as a cart on which the pallet is placed is movable by means of wheels 7 attached thereto. The pallet 6 has a frame structure, and as shown in FIG. 2, receiving pieces 8 for supporting the vehicle body 2 are arranged at predetermined positions.
An opening 9 is formed in the plane of the pallet 6 so that the jig main body 3 can approach the welding location of the vehicle body 2. FIG. 1 shows a state in which the jig main body 3 protrudes from this opening 9 and comes into contact with a welding location 10 of the vehicle body 2. Therefore, the welding device 1
is normally located below the pallet 6. The welding device 1 is based on a machine base 11 located on a floor 5, and this machine base 11 is approximately divided into an upper half 12 and a lower half 13. Lifting guides 14 are vertically provided on both sides of the machine stand 11 and extend upward and downward from the floor surface 5.
The guide portion 15 of the upper half 12 of the machine base 11 is fitted into the lift guide 14, and the lift cylinder 16 is located at the center of the lower half 13 of the machine base 11 held by the lift guide 14. , extending downward from the floor surface 5. The tip of the piston 17 of the lifting cylinder 16 passes through the lower half 13 and is attached to the upper half 12, thereby enabling the upper half 12 of the machine base 11 to move up and down. The upper half 12 of the machine stand 11 is integrated with the jig main body 3, and the jig main body 3 extending further upward includes a plurality of electrode sections 18, which will be described later.
, and can be switched by a switching mechanism 19. This switching mechanism 19 is configured such that a rotation jig 20 assembled with iron material into a substantially equilateral triangle shape is rotatably supported by an outer frame 22 through a shaft 21 . As shown in FIG. 3, the shaft 21 of the rotating jig 20 is rotated by a drive section 26 consisting of a combination of an electric motor 23, a chain 24, a gear 25, and the like. Seat surface 2 on each side of a substantially equilateral triangle of the rotating jig 20
An electrically conductive electrode portion 18 is fixed to 0a, and an electrode chip 27 is further fixed to the outside thereof as shown in detail in FIGS. 4 and 5. Note that the electrode chip 27 is connected to the vehicle body 2.
The electrode chip 28 on the power supply side is in contact with the
It is. The electrode portions 18 attached to each of the three sides of the rotating jig 20 are suitable for welding points that have a common shape in different vehicle models, especially for welding points 10 that are in the shape of a recessed tunnel as shown in FIG. At least three types of electrode parts 18 can be attached. These three different types of electrode parts 18
In order to rotate and position the drive unit 26 by the above-mentioned drive unit 26, a lock unit 29 is provided as shown in FIG. This lock portion 29 consists of a lock cylinder 30 and a lock block 32 attached to the tip of its piston 31. As the lock cylinder 30 moves up and down, the lock block 32 is guided by a guide block 33 and can slide. It is becoming. Rock block 32
As shown in FIG. 6, the V-groove 34 of the rotary jig 20 fits into the top of the substantially equilateral triangle. Furthermore, although it is abbreviated in FIG. 2, the above-mentioned electrode section 18 is placed at two different heights on the machine base 11 in the transport direction of the car body 2 and between the pallet rail 4 and the floor surface 5. A positioning part 35 that can be positioned is attached. As shown in detail in FIG. 7, this positioning part 35 is provided along the side surface of the jig main body 3 described above, and the jig main body 3 is placed on the upper stage on the side surface of the jig main body 3. A contacting body 36 is provided to protrude in order to be positioned at the lower stage, and a substantially L-shaped stop frame 37 is provided upward from the floor 5 and parallel to the jig main body 3 having this contacting body 36. It is formed along the A stop body 38 is provided protruding from the upper part of the side surface of the stop frame 37 facing the jig main body 3, and is adapted to come into contact with either of the above-mentioned upper and lower abutment bodies 36. Stop body 38
A substantially L-shaped stop body 39 is pivotally supported at the bottom of the link mechanism, one end of the link mechanism is pivotally supported at an intermediate position, and the other end is pivotally supported by the piston 41 of the cylinder 40. As shown by the solid line, the tip of the stopper 39 can come into contact with either the upper or lower abutment body 36 mentioned above. The position indicated by the two-dot chain line is the position where the stop body 39 is attached to the abutting body 36.
This shows the state in which the two are not in contact with each other. From the three types of electrode portions 18 of the rotating jig 20 described above and the positioning portion 35 that can be selected from either upper or lower or two-stage,
A total of six different types of common locations can be welded with one welding device 1. Moreover, if devices having different electrode portions 18 are arranged adjacently as shown in FIG. 2, the number of types will further increase.
このような構成からなる本発明の溶接装置１に
よつて、溶接箇所１０が車体２のトランスミツシ
ヨンの位置する窪んだトンネル状で、しかも各車
種によつて共通形状である大きさの異なる箇所に
溶接加工を行なうことを例にとつて、その動作を
説明する。まず、第１図に示している治具本体３
は昇降シリンダ１６の引き込み動作によつてパレ
ツト６の位置よりも下方にある。そして、第２図
示すように、車体２がパレツト６に載置されて、
所定の溶接箇所１０を溶接する溶接場所１ａに搬
入される。次に、位置決め部３５を作動させて、
軸支されている停止体３９を停止体３７側面から
突き出させるか、または引き込んだ状態かに選択
する。すなわち、治具本体３の最上昇位置をあら
かじめ定める。これは溶接箇所１０の深さによつ
て決まるものである。したがつて、治具本体３の
上段の当接体３６が、停止枠３７の上部の停止体
３８に当接した時は治具本体３の最上昇位置は高
くなり、上段の当接体３６が停止枠３７の下部の
軸支された停止体３９に当接した時は低くなる。
そして、昇降シリンダ１６が作動し、そのピスト
ン１７の上昇によつて治具本体３がパレツト６の
開口部９から上方へ突き出て所定位置に到達する
と、一旦、昇降シリンダ１６の作動は停止する。
その後、回転治具２０を駆動部２６によつて回転
させ、所望の電極部１８を選択すると、第３図お
よび第６図に示すようにロツクシリンダ３０が作
動し、ロツクブロツク３２のＶ溝３４を回転治具
２０の略正三角形状のうちの頂部に嵌め込むこと
によつて、回転しないように固定する。そして、
再び昇降シリンダ１６を作動させて治具本体３を
上昇させると、電極部１８の電極チツプ２７が車
体２の溶接箇所１０に当接する。同時に、治具本
体３の当接体３６が停止枠３７のいずれかの停止
体３８，３９に当接し、最上昇位置になる。そし
て、図示省略されている電源側の電極チツプが下
降して、電極チツプ２７に通電させることによつ
て溶接加工される。 By using the welding device 1 of the present invention having such a configuration, the welding location 10 can be welded in the shape of a concave tunnel where the transmission of the vehicle body 2 is located, and in addition, the welding location 10 can be welded at locations of different sizes that have a common shape for each vehicle model. The operation will be explained using an example of welding. First, the jig main body 3 shown in FIG.
is located below the position of the pallet 6 due to the retracting operation of the lifting cylinder 16. Then, as shown in FIG. 2, the vehicle body 2 is placed on the pallet 6,
It is transported to a welding location 1a where a predetermined welding location 10 is to be welded. Next, operate the positioning section 35,
The pivoted stop body 39 is selected to either protrude from the side of the stop body 37 or to be in a retracted state. That is, the highest position of the jig main body 3 is determined in advance. This is determined by the depth of the welding location 10. Therefore, when the upper abutting body 36 of the jig main body 3 abuts the upper stop body 38 of the stop frame 37, the highest position of the jig main body 3 becomes high, and the upper abutting body 36 becomes lower when it comes into contact with the stop body 39 which is pivoted at the bottom of the stop frame 37.
Then, the lifting cylinder 16 is activated, and when the jig main body 3 is projected upward from the opening 9 of the pallet 6 and reaches a predetermined position due to the lifting of the piston 17, the operation of the lifting cylinder 16 is temporarily stopped.
Thereafter, when the rotary jig 20 is rotated by the drive section 26 and a desired electrode section 18 is selected, the lock cylinder 30 is operated as shown in FIGS. 3 and 6, and the V groove 34 of the lock block 32 is rotated. It is fixed so as not to rotate by fitting it into the top of the substantially equilateral triangular shape of the rotating jig 20. and,
When the lifting cylinder 16 is operated again to raise the jig main body 3, the electrode tip 27 of the electrode portion 18 comes into contact with the welding location 10 of the vehicle body 2. At the same time, the contact body 36 of the jig main body 3 comes into contact with one of the stop bodies 38 and 39 of the stop frame 37, and reaches the highest position. Then, the electrode tip on the power source side (not shown) is lowered and welding is performed by energizing the electrode tip 27.
次に、同じ車体２で他のトンネル状の溶接箇所
１０または、別な車種の車体２が有する他のトン
ネル状の溶接箇所１０に溶接する場合で、かつ回
転治具２０にその電極部１８が備えられている場
合、まず、昇降シリンダ１６を作動させて電極部
１８を下降し、溶接箇所１０から電極部１８を離
すと共に、治具本体３が所定位置に下降すると、
昇降シリンダ１６の動作を停止させる。そして、
ロツクシリンダ３０を作動させてロツクブロツク
３２を下降し、回転治具２０の回転止めを解除し
た後、駆動部２６によつて回転治具２０を回転
し、所望の次の電極部１８を選択して、再びロツ
クブロツク３２を上昇させて、回転しないように
固定する。この時、パレツトレール４上では、パ
レツト６に載置された同じ車体２の他の溶接箇所
１０または別な車種の車体２の溶接箇所１０が位
置づけされる。そして、治具本体３は、再び上昇
して上記したように溶接加工を続ける。 Next, when welding to another tunnel-shaped welding location 10 on the same vehicle body 2 or to another tunnel-shaped welding location 10 of a vehicle body 2 of a different vehicle type, and the electrode part 18 is attached to the rotating jig 20. If provided, first, the lifting cylinder 16 is operated to lower the electrode part 18, and the electrode part 18 is separated from the welding location 10, and the jig main body 3 is lowered to a predetermined position.
The operation of the lifting cylinder 16 is stopped. and,
After operating the lock cylinder 30 to lower the lock block 32 and releasing the rotation stop of the rotating jig 20, the rotating jig 20 is rotated by the drive unit 26, and the next desired electrode section 18 is selected. Then, raise the lock block 32 again and fix it so that it does not rotate. At this time, other welding points 10 of the same vehicle body 2 placed on the pallet 6 or welding points 10 of a vehicle body 2 of a different type of vehicle are positioned on the pallet rail 4. Then, the jig main body 3 rises again and continues the welding process as described above.
以上述べた溶接装置１の動作は、周知のシーケ
ンス制御によつて運転されるもので、例えば搬入
されてくる車種、溶接箇所の形状の種類等によつ
て、電極部１８を選択できるようにシーケンス制
御装置に各データをあらかじめ設定しておき、ロ
ボツト機に備えた電源側の電極部の動作と共に自
動運転されるものである。本実施例では溶接箇所
１０が窪んだトンネル状のものを例にとつたが、
これに限定するものではなく他の形状にも使用で
きる。また溶接装置１が保有できる異なつた溶接
箇所１０の数に対する電極部１８の上段、下段位
置を含めた変化する数は、位置決め部３５の縦方
向に沿つて停止体３８，３９を、さらに形成する
ことによつて増やすことができる。 The operation of the welding device 1 described above is operated by well-known sequence control, and the sequence is set so that the electrode section 18 can be selected depending on, for example, the type of vehicle being brought in, the type of shape of the welding location, etc. Each data is set in advance in the control device, and the robot is operated automatically along with the operation of the electrode section on the power supply side provided in the robot machine. In this example, the welding location 10 is a concave tunnel-like one.
It is not limited to this, and other shapes can also be used. In addition, the number of different welding points 10 that the welding device 1 can hold, including the upper and lower positions of the electrode section 18, is changed by forming stop bodies 38 and 39 along the longitudinal direction of the positioning section 35. It can be increased by
（発明の効果）
以上のことから、本発明の溶接装置は、異なつ
た共通形状の溶接箇所に対して、アース電極とな
る電極部を複数、保有して切替可能とすると共
に、溶接箇所の深さに応じて上下段の位置選択を
保有したことによつて、異なつた溶接箇所の溶接
が同じ溶接装置によつて溶接加工されることから
車体の移動は割込工程としてではなく、溶接工程
の中に必然的に生ずる最小限の単なる動作として
溶接工程に含めることから同一工程内で異なつた
溶接箇所の溶接加工が可能となつた。したがつ
て、生産性が向上し、異なつた溶接箇所に対する
溶接加工の対応が容易なことから汎用性に富んだ
ものとなつた。(Effects of the Invention) From the above, the welding device of the present invention has a plurality of electrode parts that serve as ground electrodes for different welding locations with a common shape, and can be switched between them, and the welding device has a By having the ability to select the upper and lower positions according to the welding process, different welding points can be welded using the same welding equipment, so moving the car body is not an interrupt process, but a part of the welding process. Since it is included in the welding process as a minimal simple operation that inevitably occurs during the welding process, it has become possible to weld different welding locations within the same process. Therefore, productivity has improved and the welding process can be easily applied to different welding locations, making it highly versatile.
第１図は、本発明の溶接装置を示す正面図、第
２図は、車体に溶接する状態を示す側面図、第３
図は、第１図に矢印Ａ−Ａで示す略側面図、第４
図は、第２図に矢印Ｂによつて示す電極部の拡大
図、第５図は、第４図に矢印Ｃ−Ｃで示す正面
図、第６図は、第３図に矢印Ｄ−Ｄで示す側面
図、第７図は、第２図に矢印Ｅで示す拡大図、第
８図は、従来の溶接装置の概略図である。
１：溶接装置、２：車体、３：治具本体、６：
台車（パレツト）、９：開口部、１８：下電極
（電極部）、１９：切替機構、２０：回転治具、２
０ａ：座面。
Fig. 1 is a front view showing the welding device of the present invention, Fig. 2 is a side view showing a state in which it is welded to a vehicle body, and Fig.
The figures are a schematic side view indicated by the arrow A-A in FIG.
The figure is an enlarged view of the electrode section indicated by arrow B in FIG. 2, FIG. 5 is a front view indicated by arrow C-C in FIG. 4, and FIG. 7 is an enlarged view shown by arrow E in FIG. 2, and FIG. 8 is a schematic diagram of a conventional welding device. 1: Welding equipment, 2: Vehicle body, 3: Jig body, 6:
Dolly (pallet), 9: Opening, 18: Lower electrode (electrode part), 19: Switching mechanism, 20: Rotating jig, 2
0a: Seat surface.
Claims (1)
下電極によりフレーム構造の台車上の車体に対し
て溶接を行なう溶接装置において、前記下電極を
複数の車体に対応する複数の電極から形成し、こ
れら複数の電極を回転治具の座面に放射状に取り
付け、前記回転治具を上下動可能な治具本体で支
持し、該治具本体に前記回転治具を回転位置決め
する切替機構を持たせ、さらに前記台車に前記回
転治具の貫通を許容する開口部を設けたことを特
徴とする車体の溶接装置。1 Equipped with upper and lower electrodes for spot welding, and
In a welding device that welds a car body on a frame structure truck using a lower electrode, the lower electrode is formed from a plurality of electrodes corresponding to a plurality of car bodies, and these electrodes are radially arranged on the seat surface of a rotating jig. , the rotating jig is supported by a jig body that can move up and down, the jig body has a switching mechanism for rotationally positioning the rotating jig, and the trolley is allowed to pass through the rotating jig. A car body welding device characterized by having an opening for
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61021533A JPS62179873A (en) | 1986-02-03 | 1986-02-03 | Welding equipment for car body |
| US07/010,556 US4761533A (en) | 1986-02-03 | 1987-02-03 | Spot welding device |
| DE19873724281 DE3724281A1 (en) | 1986-02-03 | 1987-07-22 | SPOT WELDING MACHINE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61021533A JPS62179873A (en) | 1986-02-03 | 1986-02-03 | Welding equipment for car body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62179873A JPS62179873A (en) | 1987-08-07 |
| JPH0340665B2 true JPH0340665B2 (en) | 1991-06-19 |
Family
ID=12057595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61021533A Granted JPS62179873A (en) | 1986-02-03 | 1986-02-03 | Welding equipment for car body |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4761533A (en) |
| JP (1) | JPS62179873A (en) |
| DE (1) | DE3724281A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1227566B (en) * | 1988-11-08 | 1991-04-16 | Fata S P A T | WELDING SYSTEM FOR COMPOSITE FRAMEWORKS OF METAL SHEETS WITH TOOLS AVAILABLE |
| IT1235058B (en) * | 1989-06-09 | 1992-06-17 | Comau Spa | EQUIPMENT AND PROCEDURE FOR CARRYING OUT THE POLYMERIZATION, THROUGH HEATING, OF AN ADHESIVE INTERPOSED BETWEEN TWO ELEMENTS COUPLED OVERLAPPING |
| US5347700A (en) * | 1992-03-19 | 1994-09-20 | Mazda Motor Corporation | Method of assembling vehicle parts |
| US5591358A (en) * | 1994-03-23 | 1997-01-07 | Progressive Tool & Industries Co. | Apparatus for clamping and laser welding |
| DE19825720A1 (en) * | 1998-06-09 | 1999-12-16 | Herbert Hess | Equipment carrier for robot attachment |
| JP4039114B2 (en) * | 2001-09-26 | 2008-01-30 | 日産自動車株式会社 | Car body assembling method and car body assembling apparatus |
| US6768078B1 (en) | 2003-01-09 | 2004-07-27 | Fanuc Robotics North America, Inc. | Servo spot welding control system and method of welding workpieces |
| CN107931871B (en) * | 2017-11-29 | 2019-05-14 | 安徽巨一自动化装备有限公司 | Lightweight vehicle body Aluminum Alloy Roof Cover Laser Welding vehicle body flexible locating cramping apparatus mechanism |
| CN111318794B (en) * | 2018-12-14 | 2022-03-01 | 佛山市风旭科技有限公司 | Stacking clamp and material blocking cylinder structure suitable for different workpieces |
| CN109848588A (en) * | 2019-01-24 | 2019-06-07 | 李慧 | A kind of gear shaft plunger compressing apparatus for laser beam welding |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2700602A1 (en) * | 1977-01-08 | 1978-07-13 | Daimler Benz Ag | Robot for electric resistance spot welding - using portal fitted with work cylinders carrying welding electrodes |
| US4267424A (en) * | 1978-05-22 | 1981-05-12 | Nissan Motor Company, Limited | Spot welding machine for heavy-duty operations on surface contoured workpieces |
| JPS5937718B2 (en) * | 1980-12-16 | 1984-09-11 | 日産自動車株式会社 | multi spot welding machine |
| JPS57100879A (en) * | 1980-12-16 | 1982-06-23 | Nissan Motor Co Ltd | Floor assembly line of car |
| US4670635A (en) * | 1984-08-10 | 1987-06-02 | Ex-Cell-O Corporation | Multi-electrode electrical discharge machining apparatus |
| FR2580972B1 (en) * | 1985-04-25 | 1989-12-15 | Sciaky Sa | INSTALLATION FOR THE AUTOMATIC ASSEMBLY OF COMPONENTS AND, PARTICULARLY, OF BODY COMPONENTS OF MOTOR VEHICLES |
-
1986
- 1986-02-03 JP JP61021533A patent/JPS62179873A/en active Granted
-
1987
- 1987-02-03 US US07/010,556 patent/US4761533A/en not_active Expired - Lifetime
- 1987-07-22 DE DE19873724281 patent/DE3724281A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE3724281A1 (en) | 1989-02-02 |
| US4761533A (en) | 1988-08-02 |
| JPS62179873A (en) | 1987-08-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |